My task this week for the Untitled game is to get a working job in. A job is not a quest really, but it will do for lack of a better term. It just basically means 'doing something.' There are a bunch of pieces to this task, the first of which is to be able to find out about it.
One method a player can use to find out information is through an in-game Mail system. This is only a one way tool, NPC's to you. It's pretty simple, you get mail, and read it. There is nothing to accept, like you would a quest. If an NPC asks something of you, you can go do it or just ignore them. They will just end up asking someone (npc) else.
Disclaimer: The UI is just a placeholder.